Solve for 2 unknowns
3y + 3x =24
6y+3x = 39

Answers

Answer 1

Answer: The two unknown variable in the two given equations are "x" and "y".
3y + 3x = 24
Dividing both sides by 3 we get
y + x = 8
x = 8 - y
Putting the value of y in the second equation we get
6y + 3x = 39
Dividing both sides by 3 we get
2y + x = 13
2y + 8 - y = 13
y = 13 - 8
= 5
Putting the value of y in the first equation we get
y + x = 8
5 + x = 8
x = 8 - 5
x = 3
So the value of x is 3 and the value of y is 5. I hope the procedure is clear enough for you to understand.

Answer 2

Answer: this is my answer:):):):)

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Greg earn 900$ for washing 30 Windows last month . If Greg wage is increased by 2$ per window this month , how much will he earn for 30 Windows this month ?

Answers

$900 ÷ 30 = 30
Greg earns $30 per window last month.

30 + 2 = 32
Greg earns $32 per window this month.

32 x 30 = 960
Greg earns $960 for washing 30 windows this month.

Answer: $960

Which value is equivalent to 8.7% written as a decimal? A. 0.087 B. 0.87 C. 8.7 D. 87.0

Answers

To change any percent into a decimal,
move the decimal point two places this way <=== .

8.7 % ==> 0.087

8.7 : 100= 0.087
A is correct

How would i do number 37?

i will give a thanks if you reply with an answer! :)

Answers

what i would do if i were u i would line up the numbers up on thi line from y axis to x axis put the numbers negative and positive and u plot the numbers then u will get ur answer

hope it helped by explaining : )

Your parents are planning to rent you an apartment when you go to college. The annual contract is $535.00/month with a 2 month penalty for breaking the lease. The month-to-month contract is $615.00/month. What is the difference in the amount paid if you leave after 8 months?

Answers

Answer:
difference in amount = $430

Explanation:
1- Annual contract:
The annual contract means a contract for 12 months. There is a month penalty for breaking the lease.
This means that, if you left after 8 months, you will have to pay for 10 month.
Total paid = monthly payment * 10
Total paid = 535 * 10 = $5350

2- Month-to-month contract:
You will only paid for the 8 months you stayed,
Total paid = monthly payment * 8
Total paid = 615 * 8 = $4920

3- Getting the difference:
We can note that a month-month contract is a better option if you intend to stay for only 8 months
Difference = 5350 - 4920 = $430

Hope this helps :)

fie abc un triunghi cu masura unghiului a de 90 de grade ab este 6 cm bc=10 si ca=8 calculati;sin b; tg b; sin c; tg c; cos b; ctg b; cos c; ctg c

Answers

sinB = cosC = AC / BC = 8/10 = 4/5;
tgB = ctg C = AC/AB = 8/6 = 4/3, because we use T. Pitagora for calculating AB;
sinC = cosB = AB/ BC = 6/10 = 3/5;
tgC = ctgB = AB/ AC = 6/8 = 3/4.

Ryan buys a helmet for $20 and a bike that is on sale for $25 off. At the register, the cashier takes an additional 10% off the total purchase. If the initial price of the bike is $260, what is the final amount Ryan will pay?